Wire-drawing drum



May 4,1926. 1,583,380

W. K. WILLIAMS WIRE DRAWING DRUM Filed July 22, 1925 INVENTOR. warns)?ff ZU'iI h'qnzs /VATTORNE is Patented May 4, 1926.

assasse neural) s'ra 'ras PATENT for Fiend WARREN K. WILLIAMS, CUYAHOGAFALLS, OHIO, ASSIGNOR TO VAUGHN MAGHINEBY COMPANY, OF CUYAHOGA FALLS,OHIO, A CORPORATION OF OHIO.

WIRE-DRAWING: DRUM.

To all whom it may concern Be it known that LWAnnEN a citizen of theUnited States, and a resident of Cuyahoga-Falls, county. of Summit, andState of Ohio, have inventeda new andnseful' Improvement inl/Vire-Drawing Drums, of which the following is a specification, theprinciple of'the invention being herein explain-ed and the best mode inwhich I have contemplated applying that principle, so as to distinguishit from other inventions.

The present improvements relate more particularly to atake-npattaehnient for the gripper of a horizontal type of drawingblock, e. g. a bull block such as is employed in drawing the heaviergauges of wire or rod. In the operation of such a drawing drum or block,even more perhaps than in the case of a vertically disposedblock, whilethe rod initially. holds the gripping device and chain or equivalentlinked member whereby itis attached to the block against the surface ofthe latter, as the coils of rod build 7 up, the first turns are forcedout from the V inner larger ring of the drum and correspondingly loosenup. Asa result, unless-the grlpping devlce and links are in some mannerheld in they will fly out from the revolving block and thus constitute amenace to the operator.

The object of the present invention is to overcome this condition byprovidingmeans for holding the gripper at all times closely against theblock. The device is so. constructed as to be capable both of automaticand manual operation, and while particularly described as designedfor-use on a horizontal block it will be understood that it may beadapted for use on the othertypes of blocks or drawing drums.

To the accomplishment of the foregoing and related ends, said invention,then, consists of the means hereinafter fullyjdescribed and particularlyointeaout in the claims, the annexed drawing and the followingdescription setting forth in detail certain mechanism embodying theinvention, such disclosed means constituting, however but one of variousmechanical forms in which the principle of the invention may be used.

In said annexed drawing z- I I Fig. 1 is a front elevational view of ahorizontal drawing block equipped with: my present improved take-up mecianis'm; and Fig.2 is partly a side elevation and partly a KQWILLIAMs,

Application filed July 22, 1925. Serial No. 45,239.

central section of such block and device, the plane of the section beingindicated by the line 2'2, Fig. 1.

The horizontal drum 1 illustrated in the 7 several figures of thedrawing is of familiar construction, being mounted on the projecting endof a shaft 2 as usual, such drum, it will be noted, has a taperingsurface, about which the wire or rod is coiled, and at its inner largerend it is provided with a flange 3," against which the coils areinitially formed, being then gradually forced outwardly,'i. e. towardthe right in Fi 2. A plurality of circumferentially spacec pins 4project from the front face of the drum and are adapted to receive suchcoiisas they are forced entirely off the drum proper. V

The gripper 5, whereby the end oft-he wire or rod is seized preparatoryto begin- 7 ning of the drawing operation, is attached to the drumthrough the medium of a flexible member 6 consisting, as shown, of aplu-' rality' of links on the order of a chain, and a portion of thelateral face of the drum is cut away to provide a recess 7 in which suchgripper and links are received when the,

gripper is pulled in by the drawing opera tion, this position of theparts'being' shown I in dotted outline in Fig. 1, while the full lineposition thereof is that occupied when the end of the rod or wire is tobe seized by the gripper 5. I

As previously explained, the device of present interest consists ofmeans provided for holding the parts in question thus against the drum,despite the action of centrifugalforce which tends to throw themvoutwardly as the coils become loosened.

The special means thusprovided include a spindle 10 rotatablymounted inthe drum l co-aXia-lly therewith, such spindle being 7 journaled at anintermediate point in an apertured boss 11 projecting from a plate 12that closes the front face of the drum and also having its inner endstepped in a recess 13 in the end of spindle 2, that forms a bearingtherefor. Keyed or otherwise nonrotatably secured to the portion of thespindle 10 that lies within the drum is a suplement al smaller" drum 14,to which is attached one end'ef a flexible cable 16, the other end ofwhich; s attached to gripper 5. Also key' ed to said spindle, and L inad jacentthe outer face of drum 14', is a ratchet mounted on the outerend of the spindle be yond boss 11 is a hand wheel 18. A pawl 19 ispivotally secured to plate 12 in operative relation to said ratchetwheel 17, the pin 20, that carries said pawl, projecting through theplate and having secured to its outer end a handle 21 whereby the pawlmay be actuated to release the ratchet wheel, a spring 22 normallypressing such pawl into engage ment with the wheel. One side of the handwheel is enlarged to provide a weight 23, which tends to hold said wheelin the position shown, i. e. to prevent rotation of the spindle 10 andthe attached drum '14- and ratchet wheel 17 even thoughthe winding drumor block 1 is rotating.

The operation of the take-up attachment Just described may now bebriefly set forth. The direction of rotation of the drawing blockbeingas shown by the arrow in Fig;

1, it is evident that asthe gripper 5, after being initially pulled-inby the wire or rod that is being drawn, will travel around with theblock. The supplemental drum 14, however, tends to remain stationaryunder the influence of weight 23, i. e. does not at first take up therotation of the block, and as a result the cable 16 will beautomatically wound up on said supplemental drum, and when thus wound upwill be so held by the action of the spring-pressed pawl 19.Accordingly, the gripper 5 and link 6 cannot by any possibility fly out,no matter how loose the coils of wire on the drum may become. If desiredthe operator can of course turn the hand wheel 18 backwards, i. e.opposite to the direction of rotation of the drawing block, and in thatmanner quickly tighten up the cable without waiting for this to be doneautomatically \Vhen it is desired to draw the gripper out into position7 for seizing the end of a fresh rod the pawl is released through themedium of operating handle 21 and the hand wheel 18 then rotated tounwind cable 16, or such cable will of course be unwound by simplypulling outwardly on the gripper.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the'means stated by any of the followingclaims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as myinvention 1. In mechanism of the character described, the combination ofa rotatable drawing drum, a gripper, a flexible member connecting thelatter with said drum, and means adapted to hold said gripper to saiddrum against centrifugal force, said means including a supplemental drummounted on said drawing drum, a cable connecting said gripper to saidsupplemental drum, and

means adapted to rotate the latter independently of said drawing drum.

2. In mechanism of the character described, the combination of arotatable drawing drum, a gripper, a flexible member connecting thelatter with said drum, and means adapted to hold said gripper to saiddrum against centrifugal force, said means including a supplemental drummounted on said drawing drum, a cable connecting said gripper to saidsupplemental drum, and means adapted automatically to rotate the latterindependently of said drawing drum.

3. In mechanism of the character described, the combination of arotatable drawing drum, a gripper, a flexible member connecting thelatter with said drumy and means adapted to hold said gripper to saiddrum against centrifugal force, said means including a supplemental drummounted on said drawing drum, a cable connecting said gripper to saidsupplemental drum, means adapted to rotate the latter independently ofsaid drawing drum, and means normally limiting rotation of saidsupplemental drum to one direction.

4. In mechanism of the character described, the combination of arotatable drawing drum, a gripper, a flexible member connecting thelatter with said drum, and means adapted to hold said gripper to saiddrum against centrifugal force,said means including a supplemental drummounted on said drawing drum, a cable connecting said gripper to saidsupplemental drum,vmcans adapted automatically to rotate the latterindependently of said drawing drum, and means normally limiting rotationof said supplemental drum to one direction.

5. In mechanism of the character described, the combination of ahorizontal drawing drum, links flexibly connecting the latter with saiddrum, and means adapted to hold said gripper to said drum againstcentrifugal force, said means including a supplemental drum rotatablymounted on said drawing drum co-axially therewith, a cable connectingsaid gripper to said supplemental drum, and a weight connected with saidsupplemental drum and tending to hold the same against rotation withsaid drawing drum.

6.- In mechanism of V the character de scribed, the combination, of ahorizontal drawing drum, links flexibly connecting the latter with saiddrum, and means adapted normally limiting rotation of said supplementaldrum to one direction.

7. In mechanism of the character described, the combination of ahorizontal drawing drum, links flexibly connecting the latter with saiddrum, and means adapted to hold said gripper to said drum againstcentrifugal force, said means including a spindle rotatably mounted insaid drum coaxially therewith, a supplemental drum lyingwithin saiddrawing drum and fixed to said spindle, a weighted hand wheel lyingwithout the forward face of said drawing drum and likewise fixed to saidspindle, a

ratchet wheel on the latter, and a releasable pawl for said'ratchetwlheel carried by said drawing drum, whereby rotation of saidsupplemental drum may be hmited to a pre-V determined direction.

Signed by-me this 18 day of July, 1925.

WARREN K. XVILLIAMS,

